| Title: | Prediction of the wine sensory properties related to grape variety from dynamic-headspace gas chromatography-olfactometry data |
| Author(s): | Campo E; Ferreira V; Escudero A; Cacho J; |
| Address: | "Department of Analytical Chemistry, Science Faculty, Universidad de Zaragoza, 50009 Zaragoza, Spain" |
| ISSN/ISBN: | 0021-8561 (Print) 0021-8561 (Linking) |
| Abstract: | "Wine extracts obtained by a dynamic headspace sampling technique were studied by quantitative gas chromatography-olfactometry (GC-O) to determine the aroma profiles of six young monovarietal Spanish white wines. A partial least-square regression study was carried out to look for models relating wine aroma properties with GC-O scores. Models were validated by sensory analysis. Four out of the five most important sensory descriptors were satisfactorily described by a model, and sensory tests confirmed most of the predictions. The main aroma differences between these wines are due to the ratio linalool/3-mercaptohexyl acetate. Floral, sweet, and muscat are positively related to the concentration of linalool and negatively to that of 3-mercaptohexyl acetate. Tropical fruit is related to the wine content in this last odorant. 2-Phenyl acetate, reinforced by other acetates, can also contribute to floral and sweet notes. Alkyl-methoxypyrazines lessen the tropical fruit note, and acetic acid lessens the muscat nuance" |
| Keywords: | "Acyclic Monoterpenes Adult Chromatography, Gas/*methods Female Fruit/chemistry/*classification Humans Male Monoterpenes/analysis Odorants/*analysis Phenylacetates/analysis *Smell Species Specificity Vitis/chemistry/*classification Wine/*analysis;" |
| Notes: | "MedlineCampo, Eva Ferreira, Vicente Escudero, Ana Cacho, Juan eng Research Support, Non-U.S. Gov't 2005/07/07 J Agric Food Chem. 2005 Jul 13; 53(14):5682-90. doi: 10.1021/jf047870a" |
